It's not a missle. It's a meteorite with two ejection sprays. One from the rear and one from the side. The side caused rotation and the interaction of this fuel and the atmosphere then created the spiral pattern seen. The blue line in extending into the distance is the rear ejectorate. And its not "shopped" stop trying to impress us with your pixel staring abilities...
I was only joking when I said shooped -.- But srsly that guy got owned. The military confirmed it was a missile themselfs? It was a missile launch from a submarine.
You may want to look at this. But, OT, this is pretty insane. I think Nitrous has the best explanation at the moment, seems very logical. A missile? Nah. Maybe. Best compilation: YouTube- SPIRAL UFO Norway (RAW FOOTAGE)